Not really...you can at least do these two steps:
1. Fix MBR on your disk, using your Windows Setup CD (I assume you're using Win 2K/XP/2K3, so it's the "fixmbr" (or something like that) command in Recovery Console)
Sorry that I'm not very sure about the command...I suggest you double check before you run anything.
2. Even if you can't fix the MBR, chances are that the data on the HDD could still be reclaimed, if you move it to another computer and use that computer's OS to read the data on your HDD.
3. If all fail, god bless your disk and you